<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query" clearable
                    @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search"
            @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>

      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index">
        </el-table-column>
        <el-table-column label="商品名称" prop="goods_name">
        </el-table-column>
        <el-table-column label="商品价格" prop="goods_price" width="95px">
        </el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px">
        </el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeById(scope.row.goods_id)"></el-button>
          </template>
      </el-table-column>

      </el-table>

      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
        <!-- background 加了一个背景 -->
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data(){
    return {
      //  查询参数对象
      queryInfo:{
        query:'',
        pagenum: 1,
        pagesize:10
      },
      //  商品列表
      goodslist: [],
      //  总数据条数
      total:0
    }
  },
  created(){
    this.getGoodsList()
  },
  methods: {
    //  根据分页获取对应的商品列表
    async getGoodsList(){
      const { data: res } = await this.$http.get('goods',{
        params: this.queryInfo
      })
      if(res.meta.status !== 200){
        return this.$message.error('获取商品列表失败！')
      }

      this.$message.success('获取商品列表成功！')
      console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },

    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    //  实现删除商品
    async removeById(id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if(confirmResult !== 'confirm'){
        return this.$message.info('已取消删除！')
      }

      const {data: res} = await this.$http.delete(`goods/${id}`)

      if(res.meta.status !== 200){
        return this.$message.error('删除失败！')
      }

      this.$message.success('删除成功！')
      this.getGoodsList()
    },
    //  跳转到添加商品的页面
    goAddpage(){
      this.$router.push('/goods/add')
    }

  }
}
</script>

<style lang="less" scoped>
</style>
